What is the date in 100 days?
Start from today and add 100 days: the calculator below shows the date and the day of the week at once, and can turn it into a countdown.
One hundred days is a classic goal: a challenge, a training plan, the hundredth day of school. Create a countdown from the result to follow the days left.
Frequently asked questions
Is the end date counted?
By default, the gap counts from the start date to the end date, like most calculators: from Monday to Wednesday is 2 days. Tick “Count the end date” to include it.
How are business days counted?
Business days are Monday to Friday. Saturdays and Sundays are skipped, both to count a gap and to add a number of business days to a date.
How do you add a month to January 31?
The result stays in the target month: January 31 plus one month gives the last day of February, the 28th or the 29th in a leap year.
Are public holidays taken into account?
No: public holidays differ by country, region and year, and we only use official sources. Remove them yourself from the number of business days.